#!/usr/bin/python
# Copyright 2010 Google Inc.
# Licensed under the Apache License, Version 2.0
# http://www.apache.org/licenses/LICENSE-2.0

# Google's Python Class
# http://code.google.com/edu/languages/google-python-class/

import sys
import re
import os
import shutil
import zipfile

"""Copy Special exercise
"""


def get_special_paths(args):
  ans=[]
  for dir in args:
    for file in os.listdir(dir):
      if os.path.isfile(file) and re.search('__\w+__', str(file)):
        ans.append(file)
  return ans


# +++your code here+++
# Write functions and modify main() to call them



def main():
  # This basic command line argument parsing code is provided.
  # Add code to call your functions below.

  # Make a list of command line arguments, omitting the [0] element
  # which is the script itself.
  args = sys.argv[1:]
  if not args:
    print("usage: [--todir dir][--tozip zipfile] dir [dir ...]")
    sys.exit(1)

  # todir and tozip are either set from command line
  # or left as the empty string.
  # The args array is left just containing the dirs.
  todir = ''
  if args[0] == '--todir':
    todir = args[1]
    del args[0:2]

  tozip = ''
  if args[0] == '--tozip':
    tozip = args[1]
    del args[0:2]

  if len(args) == 0:
    print("error: must specify one or more dirs")
    sys.exit(1)

    files = get_special_paths(args)
    if todir:
      for file_name in files:
        shutil.move(file_name, todir)
    elif tozip:
      zip_file = zipfile.ZipFile(tozip, 'w', zipfile.ZIP_DEFLATED)
      for file_name in files:
        zip_file.write(file_name)
      zip_file.close()
    else:
      for file_name in files:
        print(file_name)

  # +++your code here+++
  # Call your functions
  
if __name__ == "__main__":
  main()
